<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        #div1 {
            border: 1px solid #ccc;
            width: 200px;
            height: 100px;
        }
    </style>

</head>
<body>
    
    <div id="div1" draggable="true">
        可拖拽
    </div>

    <script>

        const div1 = document.getElementById('div1')

        function throttle ( fn , delay = 100 ) {

            let timer = null

            return function (){

                if( timer ){
                    return
                }

                timer = setTimeout( () => {

                    fn.apply( this , arguments )

                    timer = null

                } , delay )
            }
        }

        div1.addEventListener( 'drag' , throttle( function(e) {
            console.log( e.offsetX , e.offsetY )
        } , 200 ) )

    </script>
</body>
</html>